Physics, 27.03.2020 20:26 poolwaterisgross
Q:1 if a slab of dielectric is inserted between the plates of a charged capacitor, then its capacitance
a)increases b)decreases c)becomes zero d)remains same
Q:2 when the temperature of source and sink of a heat engine becomes equal, the entropy of the system becomes
a)zero b)same c)maximum d)minimum
Answers: 3
Physics, 22.06.2019 03:50
Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.
Answers: 1
Physics, 22.06.2019 19:50
Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j
Answers: 3
Physics, 23.06.2019 02:00
Which of the following are molecules? a. al b. ag c. mgcl2 d. nacl e. c3h8
Answers: 1
Q:1 if a slab of dielectric is inserted between the plates of a charged capacitor, then its capacita...
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